I have shot a lot of tournaments and noticed that two things will cause a log jam on the course, large groups and shooting two targets from the same stake.
Some large groups will step aside and let all the people waiting on them shoot through, some are too self-absorbed to notice that they are holding things up.
One time there was a group of 8 or 9 ahead of me, I asked politely if they would split into two groups to speed things up. When they noticed the backlog behind them they were very agreeable, apologetic and split up into two groups.
Sometimes you have to be the unofficial range master, if you smile and be very nice,(compliment them on their nice looking bows) people always comply.
Then there are the bone heads that will look for a lost arrow forever, those folk are an inconsiderate lost cause, polite suggestions don't work for them.